Manufactured using digital control from high-strength polyamide, the oil seal mounting tool was designed by the Easyboost design office and prevents damage to the casing when it comes into contact with it. Insert oil seal tool Stage6 Derbi crankshaft / AM6 output shaft | MAXISCOOT This prevents the oil seal from being pushed too far into the crankcase, which would prevent the bearing from being lubricated through the lubrication hole. Tous les kits cylindre 50cc pour moteur Derbi Euro 2, 3 et 4 des motos Senda, Gilera et Aprilia 50cc Motorcycle Tool Easyboost Disassembly Key Clutch For Derbi Euro 2-3-4 Senda SM Senda R GPR Xtrem Xrace Gilera Aprilia RS Bultaco Locking Tool Disassembly Tool Crankshaft Seal Tool For Rieju MBK For the ignition side, simply turn the tool over and repeat the same operation. Thanks to the Easyboost sealing rings mounting tool, you can easily install the shaft seal for your Derbi Euro 2-3-4 or AM6 engine housing (for Rieju, MBK Xlimit, Xpower, Sherco, DT, XP6, XPS, Beta, TZR, Senda SM-R, GPR, Xtrem, Xrace, Gilera SMT To fit the oil seal on the clutch side, simply place it in front of its location and tap the mounting tool with a mallet until it stops. When it hits the casing, the shoulder on the Easyboost mounting tool stops the oil seal from moving and positions it in its original location with very high precision, to within a tenth of a millimetre.